1 // SPDX-License-Identifier: MIT
2 /*
3 * Copyright (C) 2013-2017 Oracle Corporation
4 * This file is based on ast_mode.c
5 * Copyright 2012 Red Hat Inc.
6 * Parts based on xf86-video-ast
7 * Copyright (c) 2005 ASPEED Technology Inc.
8 * Authors: Dave Airlie <airlied@redhat.com>
9 * Michael Thayer <michael.thayer@oracle.com,
10 * Hans de Goede <hdegoede@redhat.com>
11 */
12
13 #include <linux/iosys-map.h>
14 #include <linux/export.h>
15
16 #include <drm/drm_atomic.h>
17 #include <drm/drm_atomic_helper.h>
18 #include <drm/drm_edid.h>
19 #include <drm/drm_fb_helper.h>
20 #include <drm/drm_fourcc.h>
21 #include <drm/drm_framebuffer.h>
22 #include <drm/drm_gem_atomic_helper.h>
23 #include <drm/drm_gem_framebuffer_helper.h>
24 #include <drm/drm_plane_helper.h>
25 #include <drm/drm_print.h>
26 #include <drm/drm_probe_helper.h>
27
28 #include "hgsmi_channels.h"
29 #include "vbox_drv.h"
30 #include "vboxvideo.h"
31
32 /*
33 * Set a graphics mode. Poke any required values into registers, do an HGSMI
34 * mode set and tell the host we support advanced graphics functions.
35 */
vbox_do_modeset(struct drm_crtc * crtc)36 static void vbox_do_modeset(struct drm_crtc *crtc)
37 {
38 struct drm_framebuffer *fb = crtc->primary->state->fb;
39 struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
40 struct vbox_private *vbox;
41 int width, height, bpp, pitch;
42 u16 flags;
43 s32 x_offset, y_offset;
44
45 vbox = to_vbox_dev(crtc->dev);
46 width = vbox_crtc->width ? vbox_crtc->width : 640;
47 height = vbox_crtc->height ? vbox_crtc->height : 480;
48 bpp = fb ? fb->format->cpp[0] * 8 : 32;
49 pitch = fb ? fb->pitches[0] : width * bpp / 8;
50 x_offset = vbox->single_framebuffer ? vbox_crtc->x : vbox_crtc->x_hint;
51 y_offset = vbox->single_framebuffer ? vbox_crtc->y : vbox_crtc->y_hint;
52
53 /*
54 * This is the old way of setting graphics modes. It assumed one screen
55 * and a frame-buffer at the start of video RAM. On older versions of
56 * VirtualBox, certain parts of the code still assume that the first
57 * screen is programmed this way, so try to fake it.
58 */
59 if (vbox_crtc->crtc_id == 0 && fb &&
60 vbox_crtc->fb_offset / pitch < 0xffff - crtc->y &&
61 vbox_crtc->fb_offset % (bpp / 8) == 0) {
62 vbox_write_ioport(VBE_DISPI_INDEX_XRES, width);
63 vbox_write_ioport(VBE_DISPI_INDEX_YRES, height);
64 vbox_write_ioport(VBE_DISPI_INDEX_VIRT_WIDTH, pitch * 8 / bpp);
65 vbox_write_ioport(VBE_DISPI_INDEX_BPP, bpp);
66 vbox_write_ioport(VBE_DISPI_INDEX_ENABLE, VBE_DISPI_ENABLED);
67 vbox_write_ioport(VBE_DISPI_INDEX_X_OFFSET,
68 vbox_crtc->fb_offset % pitch / bpp * 8 + vbox_crtc->x);
69 vbox_write_ioport(VBE_DISPI_INDEX_Y_OFFSET,
70 vbox_crtc->fb_offset / pitch + vbox_crtc->y);
71 }
72
73 flags = VBVA_SCREEN_F_ACTIVE;
74 flags |= (fb && crtc->state->enable) ? 0 : VBVA_SCREEN_F_BLANK;
75 flags |= vbox_crtc->disconnected ? VBVA_SCREEN_F_DISABLED : 0;
76 hgsmi_process_display_info(vbox->guest_pool, vbox_crtc->crtc_id,
77 x_offset, y_offset,
78 vbox_crtc->x * bpp / 8 +
79 vbox_crtc->y * pitch,
80 pitch, width, height, bpp, flags);
81 }
82
vbox_set_view(struct drm_crtc * crtc)83 static int vbox_set_view(struct drm_crtc *crtc)
84 {
85 struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
86 struct vbox_private *vbox = to_vbox_dev(crtc->dev);
87 struct vbva_infoview *p;
88
89 /*
90 * Tell the host about the view. This design originally targeted the
91 * Windows XP driver architecture and assumed that each screen would
92 * have a dedicated frame buffer with the command buffer following it,
93 * the whole being a "view". The host works out which screen a command
94 * buffer belongs to by checking whether it is in the first view, then
95 * whether it is in the second and so on. The first match wins. We
96 * cheat around this by making the first view be the managed memory
97 * plus the first command buffer, the second the same plus the second
98 * buffer and so on.
99 */
100 p = hgsmi_buffer_alloc(vbox->guest_pool, sizeof(*p),
101 HGSMI_CH_VBVA, VBVA_INFO_VIEW);
102 if (!p)
103 return -ENOMEM;
104
105 p->view_index = vbox_crtc->crtc_id;
106 p->view_offset = vbox_crtc->fb_offset;
107 p->view_size = vbox->available_vram_size - vbox_crtc->fb_offset +
108 vbox_crtc->crtc_id * VBVA_MIN_BUFFER_SIZE;
109 p->max_screen_size = vbox->available_vram_size - vbox_crtc->fb_offset;
110
111 hgsmi_buffer_submit(vbox->guest_pool, p);
112 hgsmi_buffer_free(vbox->guest_pool, p);
113
114 return 0;
115 }
116
117 /*
118 * Try to map the layout of virtual screens to the range of the input device.
119 * Return true if we need to re-set the crtc modes due to screen offset
120 * changes.
121 */
vbox_set_up_input_mapping(struct vbox_private * vbox)122 static bool vbox_set_up_input_mapping(struct vbox_private *vbox)
123 {
124 struct drm_crtc *crtci;
125 struct drm_connector *connectori;
126 struct drm_framebuffer *fb, *fb1 = NULL;
127 bool single_framebuffer = true;
128 bool old_single_framebuffer = vbox->single_framebuffer;
129 u16 width = 0, height = 0;
130
131 /*
132 * Are we using an X.Org-style single large frame-buffer for all crtcs?
133 * If so then screen layout can be deduced from the crtc offsets.
134 * Same fall-back if this is the fbdev frame-buffer.
135 */
136 list_for_each_entry(crtci, &vbox->ddev.mode_config.crtc_list, head) {
137 fb = crtci->primary->state->fb;
138 if (!fb)
139 continue;
140
141 if (!fb1) {
142 fb1 = fb;
143 if (fb1 == vbox->ddev.fb_helper->fb)
144 break;
145 } else if (fb != fb1) {
146 single_framebuffer = false;
147 }
148 }
149 if (!fb1)
150 return false;
151
152 if (single_framebuffer) {
153 vbox->single_framebuffer = true;
154 vbox->input_mapping_width = fb1->width;
155 vbox->input_mapping_height = fb1->height;
156 return old_single_framebuffer != vbox->single_framebuffer;
157 }
158 /* Otherwise calculate the total span of all screens. */
159 list_for_each_entry(connectori, &vbox->ddev.mode_config.connector_list,
160 head) {
161 struct vbox_connector *vbox_connector =
162 to_vbox_connector(connectori);
163 struct vbox_crtc *vbox_crtc = vbox_connector->vbox_crtc;
164
165 width = max_t(u16, width, vbox_crtc->x_hint +
166 vbox_connector->mode_hint.width);
167 height = max_t(u16, height, vbox_crtc->y_hint +
168 vbox_connector->mode_hint.height);
169 }
170
171 vbox->single_framebuffer = false;
172 vbox->input_mapping_width = width;
173 vbox->input_mapping_height = height;
174
175 return old_single_framebuffer != vbox->single_framebuffer;
176 }
177
vbox_crtc_set_base_and_mode(struct drm_crtc * crtc,struct drm_framebuffer * fb,int x,int y)178 static void vbox_crtc_set_base_and_mode(struct drm_crtc *crtc,
179 struct drm_framebuffer *fb,
180 int x, int y)
181 {
182 struct drm_gem_vram_object *gbo = drm_gem_vram_of_gem(fb->obj[0]);
183 struct vbox_private *vbox = to_vbox_dev(crtc->dev);
184 struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
185 bool needs_modeset = drm_atomic_crtc_needs_modeset(crtc->state);
186
187 mutex_lock(&vbox->hw_mutex);
188
189 if (crtc->state->enable) {
190 vbox_crtc->width = crtc->state->mode.hdisplay;
191 vbox_crtc->height = crtc->state->mode.vdisplay;
192 }
193
194 vbox_crtc->x = x;
195 vbox_crtc->y = y;
196 vbox_crtc->fb_offset = drm_gem_vram_offset(gbo);
197
198 /* vbox_do_modeset() checks vbox->single_framebuffer so update it now */
199 if (needs_modeset && vbox_set_up_input_mapping(vbox)) {
200 struct drm_crtc *crtci;
201
202 list_for_each_entry(crtci, &vbox->ddev.mode_config.crtc_list,
203 head) {
204 if (crtci == crtc)
205 continue;
206 vbox_do_modeset(crtci);
207 }
208 }
209
210 vbox_set_view(crtc);
211 vbox_do_modeset(crtc);
212
213 if (needs_modeset)
214 hgsmi_update_input_mapping(vbox->guest_pool, 0, 0,
215 vbox->input_mapping_width,
216 vbox->input_mapping_height);
217
218 mutex_unlock(&vbox->hw_mutex);
219 }
220
vbox_crtc_atomic_enable(struct drm_crtc * crtc,struct drm_atomic_state * state)221 static void vbox_crtc_atomic_enable(struct drm_crtc *crtc,
222 struct drm_atomic_state *state)
223 {
224 }
225
vbox_crtc_atomic_disable(struct drm_crtc * crtc,struct drm_atomic_state * state)226 static void vbox_crtc_atomic_disable(struct drm_crtc *crtc,
227 struct drm_atomic_state *state)
228 {
229 }
230
vbox_crtc_atomic_flush(struct drm_crtc * crtc,struct drm_atomic_state * state)231 static void vbox_crtc_atomic_flush(struct drm_crtc *crtc,
232 struct drm_atomic_state *state)
233 {
234 }
235
236 static const struct drm_crtc_helper_funcs vbox_crtc_helper_funcs = {
237 .atomic_enable = vbox_crtc_atomic_enable,
238 .atomic_disable = vbox_crtc_atomic_disable,
239 .atomic_flush = vbox_crtc_atomic_flush,
240 };
241
vbox_crtc_destroy(struct drm_crtc * crtc)242 static void vbox_crtc_destroy(struct drm_crtc *crtc)
243 {
244 drm_crtc_cleanup(crtc);
245 kfree(crtc);
246 }
247
248 static const struct drm_crtc_funcs vbox_crtc_funcs = {
249 .set_config = drm_atomic_helper_set_config,
250 .page_flip = drm_atomic_helper_page_flip,
251 /* .gamma_set = vbox_crtc_gamma_set, */
252 .destroy = vbox_crtc_destroy,
253 .reset = drm_atomic_helper_crtc_reset,
254 .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
255 .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
256 };
257
vbox_primary_atomic_check(struct drm_plane * plane,struct drm_atomic_state * state)258 static int vbox_primary_atomic_check(struct drm_plane *plane,
259 struct drm_atomic_state *state)
260 {
261 struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
262 plane);
263 struct drm_crtc_state *crtc_state = NULL;
264
265 if (new_state->crtc) {
266 crtc_state = drm_atomic_get_new_crtc_state(state,
267 new_state->crtc);
268 if (WARN_ON(!crtc_state))
269 return -EINVAL;
270 }
271
272 return drm_atomic_helper_check_plane_state(new_state, crtc_state,
273 DRM_PLANE_NO_SCALING,
274 DRM_PLANE_NO_SCALING,
275 false, true);
276 }
277
vbox_primary_atomic_update(struct drm_plane * plane,struct drm_atomic_state * state)278 static void vbox_primary_atomic_update(struct drm_plane *plane,
279 struct drm_atomic_state *state)
280 {
281 struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
282 plane);
283 struct drm_crtc *crtc = new_state->crtc;
284 struct drm_framebuffer *fb = new_state->fb;
285 struct vbox_private *vbox = to_vbox_dev(fb->dev);
286 struct drm_mode_rect *clips;
287 uint32_t num_clips, i;
288
289 vbox_crtc_set_base_and_mode(crtc, fb,
290 new_state->src_x >> 16,
291 new_state->src_y >> 16);
292
293 /* Send information about dirty rectangles to VBVA. */
294
295 clips = drm_plane_get_damage_clips(new_state);
296 num_clips = drm_plane_get_damage_clips_count(new_state);
297
298 if (!num_clips)
299 return;
300
301 mutex_lock(&vbox->hw_mutex);
302
303 for (i = 0; i < num_clips; ++i, ++clips) {
304 struct vbva_cmd_hdr cmd_hdr;
305 unsigned int crtc_id = to_vbox_crtc(crtc)->crtc_id;
306
307 cmd_hdr.x = (s16)clips->x1;
308 cmd_hdr.y = (s16)clips->y1;
309 cmd_hdr.w = (u16)clips->x2 - clips->x1;
310 cmd_hdr.h = (u16)clips->y2 - clips->y1;
311
312 if (!vbva_buffer_begin_update(&vbox->vbva_info[crtc_id],
313 vbox->guest_pool))
314 continue;
315
316 vbva_write(&vbox->vbva_info[crtc_id], vbox->guest_pool,
317 &cmd_hdr, sizeof(cmd_hdr));
318 vbva_buffer_end_update(&vbox->vbva_info[crtc_id]);
319 }
320
321 mutex_unlock(&vbox->hw_mutex);
322 }
323
vbox_primary_atomic_disable(struct drm_plane * plane,struct drm_atomic_state * state)324 static void vbox_primary_atomic_disable(struct drm_plane *plane,
325 struct drm_atomic_state *state)
326 {
327 struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
328 plane);
329 struct drm_crtc *crtc = old_state->crtc;
330
331 /* vbox_do_modeset checks plane->state->fb and will disable if NULL */
332 vbox_crtc_set_base_and_mode(crtc, old_state->fb,
333 old_state->src_x >> 16,
334 old_state->src_y >> 16);
335 }
336
vbox_cursor_atomic_check(struct drm_plane * plane,struct drm_atomic_state * state)337 static int vbox_cursor_atomic_check(struct drm_plane *plane,
338 struct drm_atomic_state *state)
339 {
340 struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
341 plane);
342 struct drm_crtc_state *crtc_state = NULL;
343 u32 width = new_state->crtc_w;
344 u32 height = new_state->crtc_h;
345 int ret;
346
347 if (new_state->crtc) {
348 crtc_state = drm_atomic_get_new_crtc_state(state,
349 new_state->crtc);
350 if (WARN_ON(!crtc_state))
351 return -EINVAL;
352 }
353
354 ret = drm_atomic_helper_check_plane_state(new_state, crtc_state,
355 DRM_PLANE_NO_SCALING,
356 DRM_PLANE_NO_SCALING,
357 true, true);
358 if (ret)
359 return ret;
360
361 if (!new_state->fb)
362 return 0;
363
364 if (width > VBOX_MAX_CURSOR_WIDTH || height > VBOX_MAX_CURSOR_HEIGHT ||
365 width == 0 || height == 0)
366 return -EINVAL;
367
368 return 0;
369 }
370
371 /*
372 * Copy the ARGB image and generate the mask, which is needed in case the host
373 * does not support ARGB cursors. The mask is a 1BPP bitmap with the bit set
374 * if the corresponding alpha value in the ARGB image is greater than 0xF0.
375 */
copy_cursor_image(u8 * src,u8 * dst,u32 width,u32 height,size_t mask_size)376 static void copy_cursor_image(u8 *src, u8 *dst, u32 width, u32 height,
377 size_t mask_size)
378 {
379 size_t line_size = (width + 7) / 8;
380 u32 i, j;
381
382 memcpy(dst + mask_size, src, width * height * 4);
383 for (i = 0; i < height; ++i)
384 for (j = 0; j < width; ++j)
385 if (((u32 *)src)[i * width + j] > 0xf0000000)
386 dst[i * line_size + j / 8] |= (0x80 >> (j % 8));
387 }
388
vbox_cursor_atomic_update(struct drm_plane * plane,struct drm_atomic_state * state)389 static void vbox_cursor_atomic_update(struct drm_plane *plane,
390 struct drm_atomic_state *state)
391 {
392 struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
393 plane);
394 struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
395 plane);
396 struct vbox_private *vbox =
397 container_of(plane->dev, struct vbox_private, ddev);
398 struct vbox_crtc *vbox_crtc = to_vbox_crtc(new_state->crtc);
399 struct drm_framebuffer *fb = new_state->fb;
400 u32 width = new_state->crtc_w;
401 u32 height = new_state->crtc_h;
402 struct drm_shadow_plane_state *shadow_plane_state =
403 to_drm_shadow_plane_state(new_state);
404 struct iosys_map map = shadow_plane_state->data[0];
405 u8 *src = map.vaddr; /* TODO: Use mapping abstraction properly */
406 size_t data_size, mask_size;
407 u32 flags;
408
409 /*
410 * VirtualBox uses the host windowing system to draw the cursor so
411 * moves are a no-op, we only need to upload new cursor sprites.
412 */
413 if (fb == old_state->fb)
414 return;
415
416 mutex_lock(&vbox->hw_mutex);
417
418 vbox_crtc->cursor_enabled = true;
419
420 /*
421 * The mask must be calculated based on the alpha
422 * channel, one bit per ARGB word, and must be 32-bit
423 * padded.
424 */
425 mask_size = ((width + 7) / 8 * height + 3) & ~3;
426 data_size = width * height * 4 + mask_size;
427
428 copy_cursor_image(src, vbox->cursor_data, width, height, mask_size);
429
430 flags = VBOX_MOUSE_POINTER_VISIBLE | VBOX_MOUSE_POINTER_SHAPE |
431 VBOX_MOUSE_POINTER_ALPHA;
432 hgsmi_update_pointer_shape(vbox->guest_pool, flags,
433 min_t(u32, max(new_state->hotspot_x, 0), width),
434 min_t(u32, max(new_state->hotspot_y, 0), height),
435 width, height, vbox->cursor_data, data_size);
436
437 mutex_unlock(&vbox->hw_mutex);
438 }
439
vbox_cursor_atomic_disable(struct drm_plane * plane,struct drm_atomic_state * state)440 static void vbox_cursor_atomic_disable(struct drm_plane *plane,
441 struct drm_atomic_state *state)
442 {
443 struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
444 plane);
445 struct vbox_private *vbox =
446 container_of(plane->dev, struct vbox_private, ddev);
447 struct vbox_crtc *vbox_crtc = to_vbox_crtc(old_state->crtc);
448 bool cursor_enabled = false;
449 struct drm_crtc *crtci;
450
451 mutex_lock(&vbox->hw_mutex);
452
453 vbox_crtc->cursor_enabled = false;
454
455 list_for_each_entry(crtci, &vbox->ddev.mode_config.crtc_list, head) {
456 if (to_vbox_crtc(crtci)->cursor_enabled)
457 cursor_enabled = true;
458 }
459
460 if (!cursor_enabled)
461 hgsmi_update_pointer_shape(vbox->guest_pool, 0, 0, 0,
462 0, 0, NULL, 0);
463
464 mutex_unlock(&vbox->hw_mutex);
465 }
466
467 static const u32 vbox_cursor_plane_formats[] = {
468 DRM_FORMAT_ARGB8888,
469 };
470
471 static const struct drm_plane_helper_funcs vbox_cursor_helper_funcs = {
472 .atomic_check = vbox_cursor_atomic_check,
473 .atomic_update = vbox_cursor_atomic_update,
474 .atomic_disable = vbox_cursor_atomic_disable,
475 DRM_GEM_SHADOW_PLANE_HELPER_FUNCS,
476 };
477
478 static const struct drm_plane_funcs vbox_cursor_plane_funcs = {
479 .update_plane = drm_atomic_helper_update_plane,
480 .disable_plane = drm_atomic_helper_disable_plane,
481 .destroy = drm_plane_helper_destroy,
482 DRM_GEM_SHADOW_PLANE_FUNCS,
483 };
484
485 static const u32 vbox_primary_plane_formats[] = {
486 DRM_FORMAT_XRGB8888,
487 DRM_FORMAT_ARGB8888,
488 };
489
490 static const struct drm_plane_helper_funcs vbox_primary_helper_funcs = {
491 .atomic_check = vbox_primary_atomic_check,
492 .atomic_update = vbox_primary_atomic_update,
493 .atomic_disable = vbox_primary_atomic_disable,
494 DRM_GEM_VRAM_PLANE_HELPER_FUNCS,
495 };
496
497 static const struct drm_plane_funcs vbox_primary_plane_funcs = {
498 .update_plane = drm_atomic_helper_update_plane,
499 .disable_plane = drm_atomic_helper_disable_plane,
500 .destroy = drm_plane_helper_destroy,
501 .reset = drm_atomic_helper_plane_reset,
502 .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
503 .atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
504 };
505
vbox_create_plane(struct vbox_private * vbox,unsigned int possible_crtcs,enum drm_plane_type type)506 static struct drm_plane *vbox_create_plane(struct vbox_private *vbox,
507 unsigned int possible_crtcs,
508 enum drm_plane_type type)
509 {
510 const struct drm_plane_helper_funcs *helper_funcs = NULL;
511 const struct drm_plane_funcs *funcs;
512 struct drm_plane *plane;
513 const u32 *formats;
514 int num_formats;
515 int err;
516
517 if (type == DRM_PLANE_TYPE_PRIMARY) {
518 funcs = &vbox_primary_plane_funcs;
519 formats = vbox_primary_plane_formats;
520 helper_funcs = &vbox_primary_helper_funcs;
521 num_formats = ARRAY_SIZE(vbox_primary_plane_formats);
522 } else if (type == DRM_PLANE_TYPE_CURSOR) {
523 funcs = &vbox_cursor_plane_funcs;
524 formats = vbox_cursor_plane_formats;
525 helper_funcs = &vbox_cursor_helper_funcs;
526 num_formats = ARRAY_SIZE(vbox_cursor_plane_formats);
527 } else {
528 return ERR_PTR(-EINVAL);
529 }
530
531 plane = kzalloc_obj(*plane);
532 if (!plane)
533 return ERR_PTR(-ENOMEM);
534
535 err = drm_universal_plane_init(&vbox->ddev, plane, possible_crtcs,
536 funcs, formats, num_formats,
537 NULL, type, NULL);
538 if (err)
539 goto free_plane;
540
541 drm_plane_helper_add(plane, helper_funcs);
542
543 return plane;
544
545 free_plane:
546 kfree(plane);
547 return ERR_PTR(-EINVAL);
548 }
549
vbox_crtc_init(struct drm_device * dev,unsigned int i)550 static struct vbox_crtc *vbox_crtc_init(struct drm_device *dev, unsigned int i)
551 {
552 struct vbox_private *vbox =
553 container_of(dev, struct vbox_private, ddev);
554 struct drm_plane *cursor = NULL;
555 struct vbox_crtc *vbox_crtc;
556 struct drm_plane *primary;
557 u32 caps = 0;
558 int ret;
559
560 ret = hgsmi_query_conf(vbox->guest_pool,
561 VBOX_VBVA_CONF32_CURSOR_CAPABILITIES, &caps);
562 if (ret)
563 return ERR_PTR(ret);
564
565 vbox_crtc = kzalloc_obj(*vbox_crtc);
566 if (!vbox_crtc)
567 return ERR_PTR(-ENOMEM);
568
569 primary = vbox_create_plane(vbox, 1 << i, DRM_PLANE_TYPE_PRIMARY);
570 if (IS_ERR(primary)) {
571 ret = PTR_ERR(primary);
572 goto free_mem;
573 }
574
575 if ((caps & VBOX_VBVA_CURSOR_CAPABILITY_HARDWARE)) {
576 cursor = vbox_create_plane(vbox, 1 << i, DRM_PLANE_TYPE_CURSOR);
577 if (IS_ERR(cursor)) {
578 ret = PTR_ERR(cursor);
579 goto clean_primary;
580 }
581 } else {
582 DRM_WARN("VirtualBox host is too old, no cursor support\n");
583 }
584
585 vbox_crtc->crtc_id = i;
586
587 ret = drm_crtc_init_with_planes(dev, &vbox_crtc->base, primary, cursor,
588 &vbox_crtc_funcs, NULL);
589 if (ret)
590 goto clean_cursor;
591
592 drm_mode_crtc_set_gamma_size(&vbox_crtc->base, 256);
593 drm_crtc_helper_add(&vbox_crtc->base, &vbox_crtc_helper_funcs);
594
595 return vbox_crtc;
596
597 clean_cursor:
598 if (cursor) {
599 drm_plane_cleanup(cursor);
600 kfree(cursor);
601 }
602 clean_primary:
603 drm_plane_cleanup(primary);
604 kfree(primary);
605 free_mem:
606 kfree(vbox_crtc);
607 return ERR_PTR(ret);
608 }
609
vbox_encoder_destroy(struct drm_encoder * encoder)610 static void vbox_encoder_destroy(struct drm_encoder *encoder)
611 {
612 drm_encoder_cleanup(encoder);
613 kfree(encoder);
614 }
615
616 static const struct drm_encoder_funcs vbox_enc_funcs = {
617 .destroy = vbox_encoder_destroy,
618 };
619
vbox_encoder_init(struct drm_device * dev,unsigned int i)620 static struct drm_encoder *vbox_encoder_init(struct drm_device *dev,
621 unsigned int i)
622 {
623 struct vbox_encoder *vbox_encoder;
624
625 vbox_encoder = kzalloc_obj(*vbox_encoder);
626 if (!vbox_encoder)
627 return NULL;
628
629 drm_encoder_init(dev, &vbox_encoder->base, &vbox_enc_funcs,
630 DRM_MODE_ENCODER_DAC, NULL);
631
632 vbox_encoder->base.possible_crtcs = 1 << i;
633 return &vbox_encoder->base;
634 }
635
636 /*
637 * Generate EDID data with a mode-unique serial number for the virtual
638 * monitor to try to persuade Unity that different modes correspond to
639 * different monitors and it should not try to force the same resolution on
640 * them.
641 */
vbox_set_edid(struct drm_connector * connector,int width,int height)642 static void vbox_set_edid(struct drm_connector *connector, int width,
643 int height)
644 {
645 enum { EDID_SIZE = 128 };
646 unsigned char edid[EDID_SIZE] = {
647 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, /* header */
648 0x58, 0x58, /* manufacturer (VBX) */
649 0x00, 0x00, /* product code */
650 0x00, 0x00, 0x00, 0x00, /* serial number goes here */
651 0x01, /* week of manufacture */
652 0x00, /* year of manufacture */
653 0x01, 0x03, /* EDID version */
654 0x80, /* capabilities - digital */
655 0x00, /* horiz. res in cm, zero for projectors */
656 0x00, /* vert. res in cm */
657 0x78, /* display gamma (120 == 2.2). */
658 0xEE, /* features (standby, suspend, off, RGB, std */
659 /* colour space, preferred timing mode) */
660 0xEE, 0x91, 0xA3, 0x54, 0x4C, 0x99, 0x26, 0x0F, 0x50, 0x54,
661 /* chromaticity for standard colour space. */
662 0x00, 0x00, 0x00, /* no default timings */
663 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
664 0x01, 0x01,
665 0x01, 0x01, 0x01, 0x01, /* no standard timings */
666 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x06, 0x00, 0x02, 0x02,
667 0x02, 0x02,
668 /* descriptor block 1 goes below */
669 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
670 /* descriptor block 2, monitor ranges */
671 0x00, 0x00, 0x00, 0xFD, 0x00,
672 0x00, 0xC8, 0x00, 0xC8, 0x64, 0x00, 0x0A, 0x20, 0x20, 0x20,
673 0x20, 0x20,
674 /* 0-200Hz vertical, 0-200KHz horizontal, 1000MHz pixel clock */
675 0x20,
676 /* descriptor block 3, monitor name */
677 0x00, 0x00, 0x00, 0xFC, 0x00,
678 'V', 'B', 'O', 'X', ' ', 'm', 'o', 'n', 'i', 't', 'o', 'r',
679 '\n',
680 /* descriptor block 4: dummy data */
681 0x00, 0x00, 0x00, 0x10, 0x00,
682 0x0A, 0x20, 0x20, 0x20, 0x20, 0x20,
683 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
684 0x20,
685 0x00, /* number of extensions */
686 0x00 /* checksum goes here */
687 };
688 int clock = (width + 6) * (height + 6) * 60 / 10000;
689 unsigned int i, sum = 0;
690
691 edid[12] = width & 0xff;
692 edid[13] = width >> 8;
693 edid[14] = height & 0xff;
694 edid[15] = height >> 8;
695 edid[54] = clock & 0xff;
696 edid[55] = clock >> 8;
697 edid[56] = width & 0xff;
698 edid[58] = (width >> 4) & 0xf0;
699 edid[59] = height & 0xff;
700 edid[61] = (height >> 4) & 0xf0;
701 for (i = 0; i < EDID_SIZE - 1; ++i)
702 sum += edid[i];
703 edid[EDID_SIZE - 1] = (0x100 - (sum & 0xFF)) & 0xFF;
704 drm_connector_update_edid_property(connector, (struct edid *)edid);
705 }
706
vbox_get_modes(struct drm_connector * connector)707 static int vbox_get_modes(struct drm_connector *connector)
708 {
709 struct vbox_connector *vbox_connector = NULL;
710 struct drm_display_mode *mode = NULL;
711 struct vbox_private *vbox = NULL;
712 unsigned int num_modes = 0;
713 int preferred_width, preferred_height;
714
715 vbox_connector = to_vbox_connector(connector);
716 vbox = to_vbox_dev(connector->dev);
717
718 hgsmi_report_flags_location(vbox->guest_pool, GUEST_HEAP_OFFSET(vbox) +
719 HOST_FLAGS_OFFSET);
720 if (vbox_connector->vbox_crtc->crtc_id == 0)
721 vbox_report_caps(vbox);
722
723 num_modes = drm_add_modes_noedid(connector, 2560, 1600);
724 preferred_width = vbox_connector->mode_hint.width ?
725 vbox_connector->mode_hint.width : 1024;
726 preferred_height = vbox_connector->mode_hint.height ?
727 vbox_connector->mode_hint.height : 768;
728 mode = drm_cvt_mode(connector->dev, preferred_width, preferred_height,
729 60, false, false, false);
730 if (mode) {
731 mode->type |= DRM_MODE_TYPE_PREFERRED;
732 drm_mode_probed_add(connector, mode);
733 ++num_modes;
734 }
735 vbox_set_edid(connector, preferred_width, preferred_height);
736
737 if (vbox_connector->vbox_crtc->x_hint != -1)
738 drm_object_property_set_value(&connector->base,
739 vbox->ddev.mode_config.suggested_x_property,
740 vbox_connector->vbox_crtc->x_hint);
741 else
742 drm_object_property_set_value(&connector->base,
743 vbox->ddev.mode_config.suggested_x_property, 0);
744
745 if (vbox_connector->vbox_crtc->y_hint != -1)
746 drm_object_property_set_value(&connector->base,
747 vbox->ddev.mode_config.suggested_y_property,
748 vbox_connector->vbox_crtc->y_hint);
749 else
750 drm_object_property_set_value(&connector->base,
751 vbox->ddev.mode_config.suggested_y_property, 0);
752
753 return num_modes;
754 }
755
vbox_connector_destroy(struct drm_connector * connector)756 static void vbox_connector_destroy(struct drm_connector *connector)
757 {
758 drm_connector_unregister(connector);
759 drm_connector_cleanup(connector);
760 kfree(connector);
761 }
762
763 static enum drm_connector_status
vbox_connector_detect(struct drm_connector * connector,bool force)764 vbox_connector_detect(struct drm_connector *connector, bool force)
765 {
766 struct vbox_connector *vbox_connector;
767
768 vbox_connector = to_vbox_connector(connector);
769
770 return vbox_connector->mode_hint.disconnected ?
771 connector_status_disconnected : connector_status_connected;
772 }
773
vbox_fill_modes(struct drm_connector * connector,u32 max_x,u32 max_y)774 static int vbox_fill_modes(struct drm_connector *connector, u32 max_x,
775 u32 max_y)
776 {
777 struct vbox_connector *vbox_connector;
778 struct drm_device *dev;
779 struct drm_display_mode *mode, *iterator;
780
781 vbox_connector = to_vbox_connector(connector);
782 dev = vbox_connector->base.dev;
783 list_for_each_entry_safe(mode, iterator, &connector->modes, head) {
784 list_del(&mode->head);
785 drm_mode_destroy(dev, mode);
786 }
787
788 return drm_helper_probe_single_connector_modes(connector, max_x, max_y);
789 }
790
791 static const struct drm_connector_helper_funcs vbox_connector_helper_funcs = {
792 .get_modes = vbox_get_modes,
793 };
794
795 static const struct drm_connector_funcs vbox_connector_funcs = {
796 .detect = vbox_connector_detect,
797 .fill_modes = vbox_fill_modes,
798 .destroy = vbox_connector_destroy,
799 .reset = drm_atomic_helper_connector_reset,
800 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
801 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
802 };
803
vbox_connector_init(struct drm_device * dev,struct vbox_crtc * vbox_crtc,struct drm_encoder * encoder)804 static int vbox_connector_init(struct drm_device *dev,
805 struct vbox_crtc *vbox_crtc,
806 struct drm_encoder *encoder)
807 {
808 struct vbox_connector *vbox_connector;
809 struct drm_connector *connector;
810
811 vbox_connector = kzalloc_obj(*vbox_connector);
812 if (!vbox_connector)
813 return -ENOMEM;
814
815 connector = &vbox_connector->base;
816 vbox_connector->vbox_crtc = vbox_crtc;
817
818 drm_connector_init(dev, connector, &vbox_connector_funcs,
819 DRM_MODE_CONNECTOR_VGA);
820 drm_connector_helper_add(connector, &vbox_connector_helper_funcs);
821
822 connector->interlace_allowed = 0;
823 connector->doublescan_allowed = 0;
824
825 drm_mode_create_suggested_offset_properties(dev);
826 drm_object_attach_property(&connector->base,
827 dev->mode_config.suggested_x_property, 0);
828 drm_object_attach_property(&connector->base,
829 dev->mode_config.suggested_y_property, 0);
830
831 drm_connector_attach_encoder(connector, encoder);
832
833 return 0;
834 }
835
836 static const struct drm_mode_config_funcs vbox_mode_funcs = {
837 .fb_create = drm_gem_fb_create_with_dirty,
838 .mode_valid = drm_vram_helper_mode_valid,
839 .atomic_check = drm_atomic_helper_check,
840 .atomic_commit = drm_atomic_helper_commit,
841 };
842
vbox_mode_init(struct vbox_private * vbox)843 int vbox_mode_init(struct vbox_private *vbox)
844 {
845 struct drm_device *dev = &vbox->ddev;
846 struct drm_encoder *encoder;
847 struct vbox_crtc *vbox_crtc;
848 unsigned int i;
849 int ret;
850
851 drm_mode_config_init(dev);
852
853 dev->mode_config.funcs = (void *)&vbox_mode_funcs;
854 dev->mode_config.min_width = 0;
855 dev->mode_config.min_height = 0;
856 dev->mode_config.preferred_depth = 24;
857 dev->mode_config.max_width = VBE_DISPI_MAX_XRES;
858 dev->mode_config.max_height = VBE_DISPI_MAX_YRES;
859
860 for (i = 0; i < vbox->num_crtcs; ++i) {
861 vbox_crtc = vbox_crtc_init(dev, i);
862 if (IS_ERR(vbox_crtc)) {
863 ret = PTR_ERR(vbox_crtc);
864 goto err_drm_mode_cleanup;
865 }
866 encoder = vbox_encoder_init(dev, i);
867 if (!encoder) {
868 ret = -ENOMEM;
869 goto err_drm_mode_cleanup;
870 }
871 ret = vbox_connector_init(dev, vbox_crtc, encoder);
872 if (ret)
873 goto err_drm_mode_cleanup;
874 }
875
876 drm_mode_config_reset(dev);
877 return 0;
878
879 err_drm_mode_cleanup:
880 drm_mode_config_cleanup(dev);
881 return ret;
882 }
883
vbox_mode_fini(struct vbox_private * vbox)884 void vbox_mode_fini(struct vbox_private *vbox)
885 {
886 drm_mode_config_cleanup(&vbox->ddev);
887 }
888